glave



a. Y. GLAVE.

WRENCH.

APPLICATION FILED AUG-30,1917- 1,230,711. Patented Oct. 8,1918.

UNITED STATES PATENT OFFICE. I

GEORGE Y. GLAVE, OF NEW YORK, N. Y., ASSIGNOR T0 CLAIRE L. GLAVE, 0FLAWRENCE, NEW YORK.

warmers.

. Specification of Letters Patent.

' Patented Oct. s, 1918.

Application filed August 30, 1917. Serial No. 188,890.

To all whom it may concern:

Be it known that I, GEORGE Y. GLAVE, a subject of the King of England,and a resident of New York, New York county, and State of New York, haveinvented certain new and useful Improvements in Wrenches, of which thefollowing is a specification, reference being had to the accompanyingdrawings, forming a part thereof.

My invention relates to new and useful improvements in adjustablewrenches and its object is to provide a simple and effective device ofthis character which may be used in the usual manner in which monkeywrenches are used and which is provided with an arrangement for settingthe jaws of the wrench more tightly upon an object, than is possible bythe use of the fingers.

In order that my invention may be thoroughly understood I will nowproceed to describe the same in the following specification, and thenpoint out the novel features thereof in appended claims.

Referring to the drawings:

Figure 1 is a side elevation partly in section of a wrench madeaccording to and embodying my invention.

Fig. 2 is a similar view of certain parts of the same device with thetightening lever shown in a different position.

Fig. 3 is an end elevation of the parts shown in Fig. 2.

Fig. 4 is a sectional end elevation of cer tain parts of the wrench, thesection in this figure being taken on the line 44 of Fig. 1.

Like characters of reference designate corresponding parts in all thefigures.

10 designates the rectangular shank of the wrench, 11 an internallythreaded boss which projects from the under side thereof. and 12 acollar or enlargement at the end of the shank, and 13 the handle. 14 isthe rigid wrench jaw which is welded onto the outer end of the shankafter the adjustable jaw member has been put in place.

The adjustable jaw member fits slidably over shank 10. It comprises thejaw proper I which is designated by 15, two straps 16 which extend overthe top of the shank, and a lug 17 which extends downwardly in alinementwith lug 11. Between this lug and the back of the jaw proper is arectangular space 18. v

20 is a threaded adjusting screw, the threads of which engage thethreads of the lug 11. Its forward end passes through a clearance hole21 in lug 17 and into a circular thrust pocket 22 in the back of jaw 15.A collar 23 which fits more or less loosely in the space 18 surroundsthis end of the adjusting screw, which part need not be threaded and ispinned or otherwise affixed thereto.

On the other end of the adjusting screw is a nurled head 24, the rearend of which is castellated as at 25. An axial hole 26 is drilled in therear of the head 24 into which rotatably fits a circular member 27. Anannular groove 28 is cut in this member into which projects a screw 29to prevent the withdrawal ofmember 27 from the head without interferingwith its rotation therein. 30 is a tightening lever, one end of which isforked and ivotally connected as at 31 with member 2 The parts justdescribed form a universal joint between the adjusting screw 20 and thetightening lever 30.-

32 is a spring clip afiixed to the collar 12 as at 33; This is arrangedto hold the tightening lever in axial alinement with the adjusting screwwithout necessarily interfering with its rotation although it is to beunderstood that with the particular construction shown and described,rotation of the tightening lever is not necessary for the operation ofthe device. I

' I will now describe the manner in which this wrench is used. With thetightening lever in the position in which it is shown in Fig. 1, thejaws 14 and 15 may be relatively adjusted in a manner similar to theusual way of adjusting the jaws of an ordinary monkey wrench, by turningthe nurled head 24 by the fingers.

When a tighter grip between the jaws is required it may be attained bypulling the tightening lever 30 out of the spring clip 32 and moving itninety degrees about its pivot 31 into the most convenient one of thespaces between the projections or teeth on the castellated end 25 of thehead 24. Considerable purchase is now available for turning theadjusting screw 20 and forcing it against the back of the movable jaw15. No matter what angular position the tightening lever may take, itsuniversal joint connection with the adjusting screw makes it possible toagain force it into the spring clip 32 so that i s not in the way whenthe wrench as a whole is swung. It is obvious that the lever is alsoavailable for separating the jaws 14 and 15 should theybecome jammed orso tightly forced onto an object that they cannot be loosened by turningthehead '24, by.

the fingers.

I am aware that, Vises and wrenches have been provided with tighteninglevers, but

such devices as have been availablehereto-.

fore have been more or less clumsy and inefficienta becauseof the factthat' -such levers could not be heldinyalinement with thead? justingmember and have been therefore decidedly in the when it is desiredtoadjust the jaws intheusi'ial way by. the fingers.

The-structure which I have "shown and described has been selected asillustrative of my invention and is a construction-which I axialalinement with the adj usting; member,

and means whereby. saiditightening lever may be'swung out ,of'said axialahnement into locking condition with said adjusting member.

. 2. wrench comprising atpairf of relatively movable jaws, a rotatableadjusting member therefor, a tightening lever pivotally connected to theend ofsaid adjusting member, means for detachably holding said leverrotatably in axial alinement with the adjusting member, and meanswhereby said tightening, lever may be swung about said pivotalconnection out of said axial alinemerit" into locking condition withsaid adj usting member.

3. A wrench comprising'a pair of relatively movable jaws, a rotatableadjusting screw therefor, a tightening lever pivotally connected to theend of said adjusting screw, meansfor detachably holding said leverrotatably in axial alinement with the adjust ing screw, and lockingmeans on said screw, said lever being movable about its pivotalconnection out of said axial alinement, into engagement with saidlocking means.

4; A wrench comprising a pair of relatively movable jaws, a rotatableadjusting screw therefor, a head for rotating, said screw, the outer endof: saidrhead being .Cas-

tellated, a tightening lever, a universal joint connection betweentheadjusting screw and the tighteningilever, and a. spring clip forholdingsaid. lever in axial alinement' with saiolt SGIGW," saidv leverbeing movable about its connection with the screw into engagementrwiththecastellated end ofsaidheadt In witness whereof, .I'have hereunto set;my hand this 24cth"day;of-July,1917. I

enonen rdnnvn:

Copies o fs'thispatntmaywbeuobtained fbrfivecents each, by addressingthe Commissioner.- of Patents,

Washington-,1). 0.

